Improvement in lamps



J. SANFORD.

Wick Raiser.

? ted May 4, 1869.

es: fl jw Kiri-11:11 $21125 jtlatrnt Gtiiiiirr.

JOHN F. SANFORD, OF KEOKUK, IOWA.

Letters Patent No. 89,600, dated May 4, 1869.

IMPROVEMENT IN LAMIPS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, J on): F. SANFORD, of Keokuk, in the county of Lee, and State of Iowa, have invented certain new and useful Improvements in Lamps and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawing, making a part of this specification, in 'which-- Figure 1 is an elevation of a fountain-lamp, shown as a whole, with the double round-tube mechanism for raising the wick, and the burner peculiar to it.

Figure 2 is a vertical section of my double round wick-tube, enclosing spiral screw-shaft, surmounted by the angle-pinion cog-wheels.

Figure 3 are the pinion-wheels, situated so as to move at right angles with 'each other, viz, one moving in a horizontal and the other in a vertical plane, the former surmountin g the shaft, upon which is formed a spiral screw-thread.

Figure 4 is a metal button, fixed upon a bifurcated stem, by a screw designed when in position to spread and modify the flame.

Figure 5 is the lower, or base-plate of myimproved burner, showing the simple pivot-hinge by which it is made to open and close, to give access to upper end of wick-tube, for the purpose of lighting the lamp, and

for other purposes.

Similar letters of reference indicate corresponding parts in the several figures.

One object of this invention is to improve that class of lamps which are known as fountain-reservoir lamps, by furnishing a safe, convenient, and economical mechanism, by which a round light can be obtained, and to overcome the diflicultics usually experienced in raising the wickwith ease and regularity.

By accomplishing this object, it is well known that a better quality of light may be obtained than that usually made by flat-wick lamps.

But, in addition to this common result, I claim that the peculiar arrangement and relation of my burner with the wick secure a result in the quality and quantity of light better than anything else which has come under my observation.

In addition to this, the application of my burner to the round-wick tube enables me to dispense with the long chimneys commonly used, and to use a very short one, not more than three or four inches long, and at the same time makes the use of the round wick to be more safe, convenient, and cleanly.

Other advantages, such as the ease and regularity of raising the wick, and the copious supply of air to the point of combustion, will be more particularly referred to.

To enable others skilled in the art to understand my invention, I will describe the best means known tome for carrying it into efi'ect.

In the accompanying drawing, h'giz, I have represented a patentable arrangement for securing to fountain-reservoir lamps a round-wick tube, and, consequently, a round light, in a much better manner than any hitherto employed. In addition to which, my arrangement secures more light, and of better quality, than any I have before seen.

A, fig. 2, is my'double round-wick tube, with its accompanying parts, attached, as is shown in fig. 1, to the reservoir, by a supply-tube, b, and a supportingstem, 0'.

There are two tubes B B, one within the other, and separated by a space, 0, which is designed for the wick.

The wick is placed upon a short tube, or thimble D,

and secured to it by two serrated springs E, which are pressed inwards upon the thimble as it descends.

The short tube, just large enough to move easily over the inner wick-tube, is made to descend,

carrying the wick with it, by the action of the,

spiral screw-shaft F, moved by the angle-pinion cogwheel G.

This shaft is attached to the short tube, or thimble, by a metal plate, H, through the horizontal part of which there is a spiral screw-groove, in which works the threadof the shaft F.

This shaft, being made stationary by fixing its ends, and revolving by the action of the wheels,

must, of course, carry upward and downward the metal plate H'and the' short tube D, upon which latter the wick is fixed.

The inner of the two round tubes is open clear through, so as to admit freely a current ofair, which passes in at the lower end at and out at the upper end 0', where it is spread or deflected outward, expanding the flame around the button I.

The wheels G are fixed by bearings K, which are represented in a horizontal position, but may be vertical, having their attachment below the level of the wheels.

There is affixed to, and forming a part of the outer or larger of the round tubes, a cylindrical chamber, f f, fig. 1, running parallel with the two round-wick tubes, and nearly their entire length, stopping an inch short of the upper end, which cylindrical chamber is designed to accommodate the spiral screw-shaft F, with which it corresponds nearly in size.

The relations of this cylindrical shaft-tube with the larger outer wick-tube are shown at L, fig. 6, transverse section.

There is an enlargement of the tubular portion of the burner at g, fig. 1, made to accommodate a'ferrule of wood or other non-conducting material, which is interposed between the burner and the large roundwick tube, to prevent the heating of this tube and its 1 extension to other parts.

The point in my contrivance which I regard as of very great importance, is the placing of the wheels or bevelled gearing and their shafts, for raising and lowering the wick, on the outside of the wick-tube, and above the leveLof the oil in it.

Heretofore, as in the case of John Carton and oth ers, this gearing has been placed on the inside of with their shaft, placed on the outside of the wickthe wick-tube, and below the level of the oil, which tube, the wheels working, together with their connecposition and arrangement cause leakage of the oil, tions and thumb-piece, above the level of the oil in which, when kerosene is used, it is impossible to prethe reservoir, substantially as described.

March 27, 1869.

vent.

Having described my invention, J NO. F. SANFORD, \Vhat I claim as new, and desire to secure by Let- Witnesses:

ters Patent, is- R. If. LOWE,

The position of the cog-wheels, or bevelled gearing, GEO. N. KENDALL. 

